TPS548B28RWWR - 20A 16V Sync Buck Converter | TI | Datacenter
MPN: TPS548B28RWWR ✓ فعال| مقدار | فی یونٹ قیمت | کل رقم |
|---|---|---|
| 1 | $1 | $1.00 |
TPS548B28RWWR جائزہ
A synchronous buck converter is a DC-DC switching regulator that steps a higher input voltage down to a lower output voltage using two integrated switches (high-side and low-side MOSFETs) plus an external inductor. Within the power management hierarchy, the TPS548B28 belongs to the switching regulator family, positioned as a single-channel point-of-load (POL) solution between simple low-current bucks and multi-phase controllers.
Key features include a 4V to 16V input range supporting 20A continuous output without external bias, extended 2.7V operation with a 3.13V to 3.6V external bias, an output voltage range of 0.6V to 5.5V, and integrated 7.7-mΩ high-side and 2.4-mΩ low-side MOSFETs. The device offers fast load-transient response, accurate load and line regulation, Skip-mode or forced-CCM (FCCM) operation for light-load efficiency trade-offs, programmable soft start, and hiccup current limit for fault robustness.
The D-CAP3-style control architecture enables a small external component count and fast transient response with low output capacitance, well suited to space-constrained boards. The internal 3V LDO can be overridden by an external bias rail to improve efficiency at lower input voltages. Differential remote sense compensates for PCB IR drop, maintaining ±1% regulation at the load point.
Typical applications include server and storage point-of-load rails (DSP, FPGA, ASIC, and processor cores), datacenter and networking card power, and general industrial 20A-class low-voltage supplies. Reference design support is available via the TPS548B28EVM-023 evaluation module.
Design consideration: at 20A loads, minimize the SW-node copper area and optimize the input capacitor loop to control EMI; verify thermal performance since total MOSFET conduction plus switching losses concentrate in the small QFN footprint.
کے لیے ڈراپ اِن متبادل TPS548B28RWWR — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
فوری موازنہ ٹول — ساتھ ساتھ موازنے کے لیے متبادل پرزے منتخب کریں:
اس پروڈکٹ کے لیے کوئی ڈراپ اِن متبادل دستیاب نہیں۔
متبادل کی درخواست کریںTPS548B28RWWR زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ٹوپولوجی | Synchronous Step-Down (Buck) Converter |
| Input Voltage Range (no external bias) | 4 V to 16 V |
| Input Voltage Range (with external bias) | 2.7 V to 16 V |
| External Bias Range | 3.13 V to 3.6 V |
| زیادہ سے زیادہ آؤٹ پٹ کرنٹ | 20 A |
| آؤٹ پٹ وولٹیج کی حد | 0.6 V to 5.5 V |
| ریفرنس وولٹیج | 0.6 V ±1% over junction temperature |
| High-Side MOSFET RDS(on) | 7.7 mΩ |
| Low-Side MOSFET RDS(on) | 2.4 mΩ |
| Remote Sense | Differential remote sense |
| Light Load Mode | Skip-mode or FCCM (selectable) |
| کرنٹ کی حد | Hiccup mode current limit |
| سافٹ اسٹارٹ | Programmable |
| Internal LDO | 3 V internal LDO |
| پیکیج | 21-PowerVFQFN (RWW) |
| ماؤنٹنگ ٹائپ | Surface Mount |
TPS548B28RWWR پن کنفیگریشن
| پن 20 | SW — Switch node - connects to output inductor; per TI E2E forum, SW sends PWM to the inductor which maintains steady output current |
| پن [DATA_NEEDED] | VIN — Input supply |
| پن [DATA_NEEDED] | GND — Ground |
| پن [DATA_NEEDED] | VOUT/SENSE — Differential remote sense inputs |
| پن [DATA_NEEDED] | BOOT — High-side gate drive bootstrap |
| پن [DATA_NEEDED] | EN — Enable |
| پن [DATA_NEEDED] | SS/VSEL — Soft start / mode configuration |
| پن [DATA_NEEDED] | BIAS/VDD — External bias input for internal LDO bypass |
عام استعمالات
TPS548B28RWWR کے لیے موزوں ہے 3 ایپلیکیشنs: پاور مینجمنٹ, موٹر کنٹرول, LED لائٹنگ.
پاور مینجمنٹ
TPS548B28RWWR کا استعمال کرتے ہوئے پاور سپلائی سرکٹس میں سوئچنگ اور ریگولیشن۔
موٹر کنٹرول
TPS548B28RWWR کے ساتھ DC/BLDC موٹرز کو چلانا اور کنٹرول کرنا۔
LED لائٹنگ
TPS548B28RWWR کے ساتھ LED اسٹرنگز اور اریز کو چلانا۔
اس پروڈکٹ کے لیے کوئی FAQ دستیاب نہیں۔
کے لیے انجینئرنگ ریفرنس ڈیٹا TPS548B28RWWR — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
اہم امتیازی خصوصیات
- Differential remote sense for ±1% load-point accuracy (بمقابلہTPS53622RSBT)
- Integrated 7.7 mΩ / 2.4 mΩ MOSFETs (بمقابلہTPS53355)
- Internal 3V LDO with external bias override (بمقابلہTPS548B28EVM-023 reference configuration)
ڈیزائن نوٹس
Keep the input capacitor to VIN/GND loop as small as possible; the 20A pulsed currents in this loop dominate EMI. Per the TI datasheet layout section, place ceramic input capacitors directly at the VIN pins and use the PowerVFQFN thermal pad with a multi-layer via array to the ground plane for heat spreading.
Conduction losses are roughly I^2 x (RDSon_HS x D + RDSon_LS x (1-D)); with 7.7 mΩ and 2.4 mΩ MOSFETs, duty cycle strongly affects thermals. At 12V-to-1V, 20A designs, evaluate switching loss and consider Skip-mode only at light load, since FCCM improves transient response for processor cores.
Do not attempt to parallel multiple TPS548B28 outputs - per TI E2E forum, the device does not support paralleling; for higher current use a controller such as TPS53355. The 4V minimum input applies without external bias; below 4V, supply a 3.13V-3.6V bias to extend operation down to 2.7V.
تعمیل کی معلومات
Compliance data not present in provided verified web data; check TI product page for RoHS/REACH status.
